How does an eraser erase?

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. How does an eraser erase?

The Big Idea

Oops, a mistake! Grab an eraser and rub it away. But how does an eraser work?

Bread Crumbs

Step one: Bread Crumbs. Before rubber erasers, people used bread crumbs to rub away pencil marks. It worked, but not very well.

Rubber

Step two: Rubber. In the 1770s, a scientist discovered that a piece of natural rubber could do the job better. That's how the word rubber was born.

Sticky Trick

Step three: Sticky Trick. An eraser works by being stickier to graphite than the paper is. As you rub, tiny graphite bits cling to the eraser, and the crumbs carry them away.

A Closer Look

Let's take a closer look! Graphite sits on paper. The eraser rubs. Bits stick to it. Crumbs carry them off.

Quick Facts

Quick facts! Many erasers today are made from synthetic rubber or soft plastic. Bread was the first eraser. Rubber comes from trees. Ink is harder to erase.

Think Like a Scientist

Now, think like a scientist! Draw some pencil marks. Rub them with an eraser. Look at the crumbs under a magnifier. What do you see? Can you spot the gray graphite?

Outro

An eraser works by being stickier to graphite than paper is, so graphite bits cling to it and crumbs carry them away. People once used bread crumbs before rubber came along. Science is amazing! Remember, every big discovery starts with a small question. Keep looking, keep learning, and keep asking why! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!